<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            display: flex;
            width:200px;
            height:500px;
        }
        .box>div{
            width:100px;
            height:100px;
            background-color: pink;
            
        }

    </style>
</head>
<body>
    <div class="box">
        <div style="flex:1"></div>
        <div style="flex:1"></div>
        <div style="flex:1"></div>
        <div style="flex:1"></div>
        <div class="qq" style="width:50px;height:50px;flex-shrink: 0;"></div>
    </div>
</body>
</html>